Clatmus, page 2, House Report 213, 19th Congress, 1st Session, dated May 15, 1826.
Duflot de Mofras, an attache of the French Legation in Mexico, came to Oregon in 1841. He came ostensibly, at least, to study the country and to write a book. His work in two volumes was published in Paris in 1844. Its title is "Exploration du Territoire de Oregon, des Californie et de la Mer Vermeille, In Volume 2, page 335, he calls this tribe of Indians, Clakemas.
In a letter dated at Fort Vancouver, September 28, 1841, written by Rev. F. N. Blanchet, afterwards Catholic Archbishop of the Diocese of Oregon City, the name is spelled Flackamar ("Letters and Sketches", by Rev. P. J. De Smet, S. J., page 233, published in 1843). On page 43 of the preface to "Notice sur le Territoire et sur la Mission de rOregon" (1847), the name of Clackamas River is spelled Tlakemas.
Paul Kane, the artist, was in Oregon in 1846 and 1847. He returned to Toronto in October, 1848. His book "Wanderings of an Artist" was published in 1859. In January, 1847, ne made a visit to Oregon City. On page 196 of his book he writes of the river and the tribe and gives the name as Klackamuss.
Lieuts. Warre and Vavasour, of the British army, were at Fort Vancouver in 1845. In their "Census of the Indian Tribes," dated at Fort Vancouver, October 26, 1845, and "derived from the Trading Lists of the Hudson's Bay Company and best obtainable information," the name is spelled Clakamus, as printed in Martin's "Hudson Bay Territories" (1849), page 81, while in Prof. Joseph Schafer's copy of this "Census," in the March, 1909, Quarterly of the Oregon Historical Society, page 61, it is spelled Clackamas.
In Coues' edition of Lewis and Clark's "Expedition," Vol. 3, page 924, there is a foot-note relating to the name Clackamas, where it is said: "Preferably now Clackama, pi. Gackamas .... The Clackama is one of the best known Upper Chinookan tribes." That the name is Clackama and
